Torch



-P. F. WILLIS'.

TORCH.

APPLICATION msn Nov. 23'. y1913.

1,408,673, Patented Mar. .7, 1922.Y

7;,0' Prior ini-Zw) UNITED STATES PRIOR F. WILLIS, OF ST. LOUIS, MISSOURI.

TORCH.

Specification of Letters Patent.

Patented Mar. 7, 1922.

Application led November 23, 1918. Serial Nb. 263,896.

To all 'whom t may concern:

Be it known that I, Pinon F. l/ViLLis, a citizen of the United States, residino in the city of St. Louis and State of Missouri, have invented a new and useful Improvement in Torches, of which the following is a specification.

This invention relates to gas burners or blow-pipes, more commonly referred to as torches and used for the fusing or welding and cutting of metal, and in the use of which somo fuel gas, such as acetylene, hydrogen, coal product, or the like, with a supporter of combustion, such as oxygen, is employed.

ln devices of this character the burner head is usually arranged and provided for the attachment of interchangeable nozzles or tips of various sizes and capacity, and, obviously, it is necessary to maintain leakproof joints between the head and the nozzle or tip, so as to prevent the escape of the separate gases to the atmosphere yand t0 secure the proper proportionate mixture of the gases for combustion.

As the nozzles or tips are usually made, however, the seating faces thereof are liable to injury or disguration, by being dropped upon the floor or other hard surface, to such an extent as to render them ineiiicient and oven absolutely useless for the purpose intended.

'lfhe present invention therefore, has for its principal objects to produce a structure to obviate the above noted disadvantage, to simplify the structure of the burner as a whole, to particularly improve the means for attaching the nozzles or tips to the head, to eliminate shoulders or obstructions in the head on which dirt and grit might lodge, and to provide for the easy cleaning of the interior of the head. Other advantages to be attained will more fully appear from the following description.

The invention consists in a novel structure, and in the parts and combinations and arrangements of parts hereinafter set forth and afterwards pointed out with particularity in the appended claims. i

ln the accompanying drawing wherein the invention is illustrated as applied to a fusing or welding torch,'-

Figure 1 is a side elevation of the cornplete torch;

Figure 2 is a longitudinal section through the burner head with the tip in place;

Figure 3 is a detail View of the tip detached; and

Figure 4 is a longitudinal section through the burner head with the conducting pipes and tip removed therefrom.

Referring now to the drawing, vthe numeral 1 designates the handle portion of the torch of the usual or any desirable construetion, but having two separate passages therethrough (not shown) and provided respectively with cut-olf valves 2 and 3. Communicating with one of the passages, at onel end of the handle, is a supply pipe 4L for the oxygen or supporter of combustion, while the other passage has a pipe 5 communicating therewith for supplying the acetylene or other suitable fuel gas. The opposite end of the handle 1 is connected to the burner head 6 by pipes sa and 5a which conduct the separate gases from the supply pipes.

As shown more clearly in Figures 2 and 4t, the burner head 6 has a bore 7 therethrough, at the opposite ends of which are tapered or flared seats 8, 9, respectively. The head is further provided with twogas passages, the one, 10, affording communication between the pipe 4 and the middle cylindrical portion of the bore 7, and the other, 1l, affording communication between the pipe 5l and they flared seat portion 9 of the bore.

rlhe nozzle orvtip, as shown, and designated generally by the numeral 12, is provided with the usual, relatively small, longitudinal bore or passage 13 for the outlet of the combustible mixture, and the transverse or oblique ports 14, 15, which respectively afford communication between the bore 13 and the passages 10 and 11, as will presently appear.

The nozzle or tip 12 is provided with a counterpart tapered portion 16 to fit the seat portion 9 of the bore 7 in the head 6,

touch said surface.

When the nozzle or tip is in place as shown in Figure 2, there is an annular space shank, and between the shoulder formedby of thehead 6 communicates, and to afford communication between said space 22 and theportr11lin the nozzle or tip, the part 17 of the shankis cut away or flattened on one side,` as at 23; or, obviously, the Vshankmay be grooved longitudinally to afford the passageway to said port la., of which latter there may be only one as shown,vor more if desirable. Y

, To afford ample communication between thegas passage 11 and the ports V15, of which latter there may be two as'shown, or more. or less, las desired or necessary, the tapered seatingface of the nozzleor tip is catedso as to register with the end of the passagell and Vhaving the ports 15 terminating therein.V

By accurately forming Vthe seating faces of the nozzleor tip and the burner head, a perfect sealri's obtained to prevent leakage of the gases g' and, obviously, these seating faces and the shank portions of Vseyeral ities may be madel to one and the same standard for interchangeability, Vit being cnly'necessary to vary theV capacity of the mixing chambers, outlet passages and ports of the respective nozzles or tips.

The provision ofthe shank extension, in

' addition to affording a simple and eflicient means for theV attachment Vof the nozzle or tip to 'thel burner head, further serves as a guard to prevent mutilation Vof the seatL ing facel; That is to say, if the nozzle or tip is placed or falls upon aplainV flat sur` face, such asjthe floor, work table or the i like, only the peripheral portion of the enlargement adjacent to theseating face and vantageatta'inedand one ofthe prime fea-` tures'of novelty in `the invention.V

A" further adyantageof the invention is the ease. with which theboref 7' mayvbe cleaned,V due to thel absence Vof any abrupt shoulder or cbstructionrforV theV lodgment of Vparticlesv of grit or `other"foreignsubstance.

22 in the bore 7, ,about the part 18 of the the part 17 and the end of the nut or plug" 20. With this space 22 the gas passage'lO` grooved annularly, as at 2li (shown morel clearly in Figure 3), said groove being lonozzles or tips of Vdifferent working capac-V the extreme endportion ofthe Vshank 4will, This is a material ad Vthe tapered enlargement of the shankfcd Obviously, s the structure V'admits off-conf.

siderable modication without in the least departing from the spirit of the invention. Therefore, it is not limited to that shown in the drawing. it is further understood that the invention is equally applicable to a cutting torch as well as to the fusing or welding torch shown, the only difference being in the Varrangement of the passageways in the'nozzle or tip as is well known in the art.

lVhat is claimed is: Y

1. 1n a torch of the character described, a head having a bore therethrough, the ends of the bore being flared outward, a detach able nozzle having a shank extending in said bore and Vhaving a counterpart tapered enlargement at the `base of said shank fitting the adjacent flared portion of the bore with sealing effect, and a plug having an axial screw-'threaded engagement with said shank of the nozzle and having a `counterpart tapered portion fitting the adjacent flared portion of the bore of said head with sealing effect, said head having a gas passage communicating with said bore thereof betweenits flared portions and a separate gas passage communicating with the flared portion in which the enlargement of the nozzle at the 'base ofits shank seats, said nozzle having a longitudinal mixing chamber with a port communicating with said bore of the head between the flared portions of the latter and a second port open through the seating face of the enlargement at the base of theshank of the nozzle, and an annular, grooved passageway being provided between said enlargement and the cooperating flared portion of the boregof the head affording'communication with said second mentioned Vgas passage ofthe head in any rotative position ofthe nozzle in place.

2. n a torch ofthe character described, aL head having an unrestricted bore thereV through, the ends of the bore being flared outward, said head havinga gas passage communicating with said bore between `the flared portions thereof and a second' gas passage communicating with one of said flared portions, a nozzle having a shank extending in said bore ofthe head and having'a counterpart taperedv enlargement at the base of said shankfitting the tapered portion of the bore of the head withwvhichV said second mentionedjgas passage communicates, and a plug Vhaving an axial screw-threaded engagement'w-ith theV outer end portion ofsaid shank of the nozzle and a counterpart tapered portion .fitting the,` flared portion of the bore opposite thegflare'd portion with which operates', said nozzle haring a longitudinal; mixing vcha-inicienwith a portVA opening through theV shank 'clear ofthe seating'porV tiongoffthe enlargement atA the base ofthe Y VVshank anda second port'opening through saidjl Y enlargement, an annular,

iro

izo

-gropvedy pasirs-O sageway being provided between said shank and bore to afford communication between said first mentioned gas passage of the head and ist mentioned port of the nozzle, and an annular, grooved passageway being provided between said enlargement of the nozzie at the base of the shank and the cooperating laied portion of the bore affording Communication between said second mentioned gas passage of the head and said l0 second mentioned port of the nozzle.

In testimony whereof, I have hereunto set my hand, this 13th day of November, 19187 at St. Louis, Missouri.

PRIOR F. WILLIS. 

